Tire mold



Dec. 1 9-2T5 A. R. COL

,VIN 1566,251J

F TIRE MOLD iled March lO, 1925 2 s j'y'l. Meets-.Shen l n n l l jrg/nifl ATTORNEYS "Dec, i5, 1925o Y1,566,259

lA. R. com/1N TIRE MOLD v Filed March lO, 1925 2 Sheets-Sheet 2 l G seinbledmold;

raienieanec. is, 1925. i I i v1,566,259

tJllED STATES PTENT OFFICE.

ARTHUR REM) CGL'VIN, 0F BLG'M'FIELD, NEW JERSEY.

Tins Mono.

'Application led March 10, 1925. Serial No. 14,509.

To all whom t may concern: Figure 4 is across sectional view on the 55 f' Be it known that l, ARTHUR R. CoLvIN, a Aline 1-1 of Figure 1; citizen of the United States, and a resident Figure 5 is a partial sectional view on the of Bloomfield, in the county oi Essex and line 2-'2 ot Al `igure 1; and 5 State ot' New Jersey, have invented a cer- Figure 6 is a view in elevation of a poi-,

tain new and inproved Tire Mold, of which tion o. the top and bottom mold. sections 60V the following is a full, clear, and exact de'- showing a sectional view of one of the scription. lianges.

he present invention relates to molds for Referring to the drawings illustrating vulcgmizing pneumatic tires by. what ig, the invention, l indicates a tire mold parted known as the air bag process and has for at its'lannular median line to form upper 55 an object to provide a mold which may be and lower mold sections 2 and 3 respectively assembled` and disassembled by a minimum and providedwith an annular, interior cavnumber ot operations, and with means for ity l vtor the reception of a tire to be vul readily locking and unlocking the same. canized. e The lower mold section 3 is pro- The usual tire mold now used in the air vided with dowel pins 5 whichtit into open- 70 bag process is adapted to be held together ings 6 in tlieiipper section for the purpose by a plurality of bolts positioned about the of holding the sections in alinement. The

periphery of the mold, which have to be upper and lower sections are both provided placed in position and tightened by hand with a series of equally spaced, outwardly heitere the air bag positioned within the tire extending projections 7 on their peripherics, 75 -forming the core is inflate Sometimes the the projections on the upper section being molds are placed in a vu'lcanizer one upon tapered at 8 and oi'set or staggered with another. with hydraulic means for holding reference to the projections on the lower secthe mold sections together. This method tion when the sections are mated.

requires connections .from outside of the vul- The two sections are adapted to be locked 90 canizer, to each mold, to provide ineans'for together by means ot an annular ring l) poinilating the air bag' after the hydraulic sitioned about their peripheries as shown in pressure has been applied. Figure l. This ring is provided with an The present invention, therefore, has for inwardiy-extending annular bead l() which an object to provide a mold which may be, is adapted' to seat on the projections 7 of the 85 'I disassembled and reassembled as quickly as lower section. A series of equally spaced. possible, without the use ot bolts or hydrauinwardly extending tla'nges or lugs 11 and lic pressurel tor holding the sections to- 12 is provided about the upper and lower gether. To accomplish this the present inannular edees of 'the ring respectively. The ventioii provides a mold with a continuous tiaiiges o r ugs 1l and 12 about the upper 90 locking ring adapted to beipositioned about and lower annular edges" are in vertical the perir'iherieslot` tlie mold sections. aliiicment, the flanges 11 being tapered as at Another object in view is to provide a i3 toJeffect a wedging action with the ta locking ring which is seated when in unpereil sfo-faces 8 ot' the projections 7.

locked position, on the lower section7 where- This wedging action is effected by inov- 95 hy the mold may be disassembled without ing the ring 9 'circurnterentially about the removing the rino, mold sections 2. and 3 until the flanges 11 ini- Still another object in view is tov provide pinge ou the tapered surfaces 8. To rotate novel means for rotating the ring into locked tli'e ring 9`in this manner a crank 14 is proand unlocked positions. y vided'whicli comprises a handle member 15 100 The .accompanying drawings illustrate and a pinion 16 which travels on a rack 17 the ii'ii'ention, in which l provided on one ot' the projections 7 of the Figure l is a perspective view ot the assection 2 by a turning of the handle inem- I ber 1F. It will. be understood that turning Figure 2 is a perspective view ot the mold the handle member 15in one direction will 105 witlrthe locking ring removed; cause the ringl to travel with the pinion in Figure is a perspective view of the lockone direction, while turning the handle n ingI ring; the opposite direction will cause the pinion and ring to travel in the reverse direction. The crank 1 4; may be lifted out of the bearings 18 end-19 so that before the moldis placed in the heater for Vulcanizing the tl'e the crank is removed whereby it remains cool and may be readily grasped to unlock the mold when it is nanlowecl from the heater.

The sections 2 and 3 have complementary recesses 20 and 21 respectively, to 'eoeive therebetween an anonimi mold section oi.' ring v22; This section foims c, seat for the ein ibeg and is provided with e recess 23 to receive the tire beads thereby cli-operating with the sections 2 and 3 to lorm'tlie vuloenizng chamber 4i. v

To assemble the inolcl the i'ng 9 is liest applied to the bottom section, the angee l2 about 'its lower annuler edgel passing through the openings 2li between 'the out- Werdly extending pi'ojections 7 until the oilmiler bead l() is seated on the projections i?. The ,ring 9 is theo rotated by hund until the Hongos i2 pass 'unolei1 the projections l" so that when the section 2 is positioned on the flower section 3 the doWel pins thereof will' enter the openings 6 at the seme time that the lianges ll pass through the openings 25 between the piojections 'i' on the upper Section. 'Before applying the upper section, howevei', the green. tire having the nir bag partly inflated therewitliin is assembled on the annular mold section or ring 22. The molol section 22 togetliei with the tiie is then placed in position on the lower seotion. The lippe? .section is then, ploceffl in position as hereinbetore de. ciibed. The cenk lll is then plecefl in position in the bearings i8 and 19 and turned until the enges .l impinge on the top surfaces 8,

.it Will 1oe understood that the bead 8 pie vente the ring 9 from dropping when `the section 2 is ien/ lovedK This construction llas the advantage tliatit is not necessary rto removetoe ring to disassemble the mold l claim:

l. A. tire mold' comprising uppei' und lower mold sections, en annuler section form-- ng'therewith an interior cavity for 'thereception of e tire to be vulcanized? said upper end lowel` sections being provided on their 7 peripheral faces with equally spaced, outwardly extending projections, the proie@ tions on the upperv section being m'rano'ed in superposed und staggered relation Wit rel erence to the projections 'on the lowensection when the sections are mated, and en annule? ring fitting circumferentially about the said upper and lower sections and adapted to engage said projections to lock the sectonstogether.

2. xii. tire lower mold seid sections providing, when mete/d7 an inmoll comprising upper and terior cavity foi.' the reception of e tire to be sections, on ennnleinsection? Leeeeee vulcanized,an annuler ring curn'erentiaily about tlie se ia er sectionsq being pi'oided n i, extending annuler heeel:1 ineens o s zooo' section providing o, seat for the in oeefl? 7o and 3o-operating means on' .said ring," 1 said Lippe-:1' and lower sections?, foi' lowing the ,sections together.

3. i tire mold compiieing upper anni low-l er mold- Qectionsn en .Simuler Wl when noted with the serial tippe; sections provides an int v eceptlon ol o tite to be per and lower sections l theii peripliei'z'il feces equally e wzudly ext-ending projections? i adopted to lit ciii'conieein l sani lippe? end lowe.' sections-z3 wliic ie ci 'ideal with en inWei-ly extendingeclopteol to seat tlie 'pojecti seid lower section, enti which with inwerclig exten-lieg engage tile pojectione on lowei'- sections, tot' loc! gctlxei.

A tire meid con A ei' mold scot-ions, en annuler section i ing tl'ie'ewitli etici ca'vitjf' loi the :tcception of e go velcenizecl, seid op and lower sections being povileil t" peliplieioi faces *with eqn l e wordljs extending' projo tions on the uppci section with reference to 'the projcotior- Y 'ng :formeel on' paced, out 53o n iner section, e inginen'ibei adopted to fitoii im@ cunit'ei'entielly about the Seil Wi lower sections enel being pi' o nwziiflly intending el :it o on the piojec y the lower section :mtl i ing' ii'isxei'cliy en Fading adapted to mi engege piojections of the it. er enel lowei.1 sections foi' locking the secti ne to getlier.

3. molti coniprisingf ei molt-ieections, annuler im Sii ferentially about the Sections, l5.. A 'tie mold comoising lippe? enel low sections, en eisifirxlensection for? ig when rooted "with said upper anni iowei' sections on inteiioi cavity foiT 'the reception of e, tice to be vulcanized, e ying; member adopted to .fi'fc`. ninforentiolly about the lossen sections and to tion thereof, ine-ns on opp i :v on the lower. s oid ring and i' and lower sections for locking the sections tion of a tire to be vulcanized, a ring member together, and means engageable with said adapted to be moved ciroumferentially'about 10 ring and one of said sections for turning the said upper and lower sections to look the said ring circumferentialb7 about the seosections together, and means engageable 5 tions to lock the same together. with said ring and one of said sections for 7 A tire mold comprising upper and lown` turning said ringF about the sections. i

er mold sections, an annular section forming I therewith an interior cavity for the reoep- ARTHUR REID COLVIN. 

